As she has taken emergency contraception
within 36 hour of unprotected sex so chance of pregnancy
So don' worry just wait for normal menstruation
to come (comes then no chance ) if it doesn't even 1 week later then do UPT to confirm pregnency
Even if she concieves then medical termination of pregnancy can be done if both of you are agreed at gynecology clinic .
Hope this ll help
THANKS N REGARDS